What is the total energy of an electron moving with a speed of 0.950 c? a. 2.6 × 10-13 J b. 1.1 x 10-13 J c. 1.2 × 10-14 j d. 8.2 x 10-14 J
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A: Solution:-Given thatEnergy (E)=5.25 Jspeed of light (c)=3×108 m/s=1.86×105 mi/s
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Q: relativistic momentum
A: Given speed of electron v=0.75c rest mass of the electron m0=9.1×10-31kg Speed of light c=3×108m/s
Q: Please answer all multiple choice ASAP. Thank you!!!
A: Step 1: Question No. 1 and 2 Step 2: Question No. 3 and 4 Step 3: Question No. 5, 6 and 7
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- multiple choice question As the velocity of an inertial frame of reference increases with respect to a stationary observer, Einstein's theory of special relativity predicts that the length of an object, measured in the dimension parallel to the motion of the reference frame, will A decrease. B. remain unchanged. Jump to 1 2 3 4 5 6 7 8 9 10 increase. D. increase at first but start to decrease when the speed of the reference frame equals half the speed of light. E. decrease at first but start to increase when the speed of the reference frame equals half the speed of light.1. axextes A particle interacts with other particles in a uniform density medium and executes a random walk. If the particle takes an average time t to travel a distance L away from its starting point, about how long on average does the particle take to travel a distance 2L away from its starting point? A. 0.5t B. t C. 1.4 t D. 2 t E. 4t2. Calculate the momentum, kinetic energy, and total energy of an electron traveling at a speed of 0.744c.
- How much work must be done on an electron to accelerate it from rest to a speed of 0.949c? Number i UnitsAn astronaut on a rocket ship is headed straight for another galaxy and an observer is standing on Earth. If they both shine a flashlight simultaneously as the rocket ship is moving away at a large speed, which of the following is true? A. The person on the rocket measures a higher velocity for the light from the flashlight. B. The person on the Earth measures a higher velocity for the light from the flashlight. C. They both measure the same velocity of light. D. It cannot be determined without additional information.A radioactive element is kept inside a laboratory. Person A is stationary with respect to the lab. Person B is moving at a speed of 0.5c with respect to the lab. Person C is moving at a speed of 0.9c with respect to the lab. Which person will measure the shortest half-life A. Person C B. Person A C. All of them measure the same half-life D. Person B
- Stopping potential (V) 7.0 6.0 5.0 4.0 3.0 2.0 1.0 f(10¹5 Hz) 0 0.50 1.0 1.5 2.0 2.5 3.0 Fig. 1 The graph in Fig. 2 shows the stopping potential as a function of the frequency of the incident light falling on a metal surface. Find the work function of this metal. A. 5.169 eV. B. 3.422 eV. C. 1.089 eV. D. 0.773 eV.9. An astronomer on earth observes two spacecraft moving away from each other along an axis that passes through the earth. The astronomer measures the speed of each spacecraft to be 0.875c relative to the earth. At what speed are the spacecrafts moving apart relative to each other? a) 0.496c b) 0.467c c) 1.750c d) 0.143c e) 0.991c 10. How far apart must two objects on the moon be to be resolved by a telescope which has a 7.80-m diameter mirror? The wavelength of the light used is A610 nm, and the distance to the moon to be 3.80 x 105 km. a) 24.4 m b) 29.7 m c) 36.3 m d) 72.5 m e) 12.2 m 11. A converging lens with a focal length of (f₁ = 32.0 cm) is placed 42.0 cm to the left of a diverging lens with a focal length of (f2 = -25.5 cm). An object is placed 40.0 cm to the left of the converging lens. What is the location of the image produced by the combination of lenses? a) 32.5 cm to the right of the diverging lens b) 32.5 cm to the left of the diverging lens c) 160 cm to the left of the…Q1